Lactose in enough quantities gets my tummy rumbling in a bad way so I’m trying out alternatives.
Oat milk in hipster coffee drinks is pretty good.
Soy milk as a protein and calcium beverage is fine. Tastes OK.
There is lactose-free milk too but that is still suspect. Either it’s not all the way lactose free or too much of any kind of dairy quakes my intestines.
I seem to recall that fat intake is not as “fattening” as carb intake. Both the carbs and fat you eat are used for energy first, which means that your body has to process the fats into carbs first - which takes energy itself. The surplus of either is converted and stored as fat.
Carbs also have to be broken down in to sugars. It’s just a lot easier to do than with fat. Ketosis is a bit more complicated than just lopping off glucose from large chains.
The problem with too much fat in a diet is that is screws with your cardio system by gunking it up. (greatly simplifying of course but meh, lazy today)